{"id":24063,"date":"2026-04-01T06:00:45","date_gmt":"2026-04-01T11:00:45","guid":{"rendered":"https:\/\/insta-pro.com\/?p=24063"},"modified":"2026-03-31T08:38:37","modified_gmt":"2026-03-31T13:38:37","slug":"high-shear-dry-extrusion-shows-poultry-digestibility-improvements","status":"publish","type":"post","link":"https:\/\/instapro.spinuhost.com\/en\/blog\/nutritionandtechnologies\/high-shear-dry-extrusion-shows-poultry-digestibility-improvements\/","title":{"rendered":"High-Shear Dry Extrusion Shows Poultry Digestibility Improvements"},"content":{"rendered":"

The amino acids that make up proteins are critically important in any diet. Typically, in order to build proteins,\u00a0all amino acids\u00a0are needed.\u00a0 Commercial diet formulations often focus on lysine and methionine levels, as these tend to be limiting to growth and efficiency. However, when formulating least-cost diets, other amino acids often come into play as well. There are two\u00a0sulfur-containing amino acids<\/a>\u00a0that make up proteins \u2013 methionine and cysteine.<\/p>\n

Heat processing, which deactivates trypsin inhibitors and other anti-nutritional factors, is needed to make high-quality soy meals that enhance animal growth. It should be noted that one type of heat processing does a markedly better job of promoting the digestion of sulfur-containing amino acids than others: high-shear dry extrusion<\/strong>.\u00a0In the case of cysteine digestibility, high-shear dry extrusion is far superior to other methods (data from Dr. Carl Parsons, University of Illinois).<\/p>\n

\"\"<\/p>\n

As seen in the graph above, high-shear dry extrusion does something unique to free up cysteine in soy proteins. A 5\u20136% improvement in digestibility<\/a> represents a significant processing advantage.\u00a0The heating process for hexane extraction and those achieved with expanders produce very different results, making access to cysteine during digestion much more difficult.<\/p>\n

Remember that cysteine is used in proteins to give structure and function, and one important group of proteins in soy is the trypsin inhibitors.\u00a0 For example, one soy trypsin inhibitor contains seven cysteine pairs that help the protein maintain its structure and function, which can interfere with protein digestion (see here<\/a>).\u00a0Vastly improved cysteine digestibility following proper processing with high-shear dry extrusion can also indicate better anti-nutrient deactivation, providing a higher-quality meal.\u00a0Additionally, feathers are rich in these amino acids, resulting in higher dietary requirements for chickens.<\/p>\n

What does this mean for formulations?\u00a0 When using high-shear dry extruded soy meals in, for example, broiler formulations, premiums can be realized from $30-60\/ton for meal.\u00a0Part of this advantage is due to improvements in amino acid digestibility, including cysteine.<\/p>\n

For more information on digestibility analysis of extruded ingredients or how our processing techniques can benefit your operation, please consult our nutrition team.<\/p>\n","protected":false},"excerpt":{"rendered":"

The amino acids that make up proteins are critically important in any diet. Typically, in order to build proteins,\u00a0all amino acids\u00a0are needed.\u00a0 Commercial diet formulations often focus on lysine and methionine levels, as these tend to be limiting to growth and efficiency. However, when formulating least-cost diets, other amino acids often come into play as […]<\/p>\n","protected":false},"author":40,"featured_media":21122,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7180],"tags":[8980,8982,87,27,52,113,7838,1450,244,153],"class_list":["post-24063","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nutritionandtechnologies","tag-express-oil","tag-express-soy","tag-express-soybean-meal","tag-extrusion-processing-solutions","tag-full-fat-soy","tag-full-fat-soybean-extrusion","tag-high-shear-dry-extrusion","tag-nutrition","tag-protein","tag-soybean-oil"],"acf":[],"yoast_head":"\nHigh-Shear Dry Extrusion Shows Poultry Digestibility Improvements - Insta-Pro<\/title>\n<meta name=\"description\" content=\"High-shear dry extrusion enhances cysteine digestibility in soy meal, improving amino acid availability, 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